Concepedia

W-hierarchy

The W-Hierarchy is a hierarchy of complexity classes in parameterized complexity theory that stratifies decision problems according to the degree of hardness based on the weft of Boolean circuits, with each level W[t] capturing problems reducible to a circuit family of weft t.

11

Publications

392

Citations

17

Authors

14

Institutions

Publications per year

2017–2026

0

Parents

Publications

11

Beyond NP-completeness for problems of bounded width: hardness for the W hierarchy.

Hans L. Bodlaender, Michael R. Fellows, Michael Hallett · Symposium on the Theory of Computing · 1994 · 66 citations

, , +13

On the Complexity of Database Queries

Christos H. Papadimitriou, Mihalis Yannakakis · Journal of Computer and System Sciences · 1999 · 54 citations

, , +14

Parameterized circuit complexity and the W hierarchy

Rodney G. Downey, Michael R. Fellows, Kenneth W. Regan · Theoretical Computer Science · 1998 · 46 citations

, , +14

Model-Checking Problems as a Basis for Parameterized Intractability

J. Flum, Martin Grohe · Logical Methods in Computer Science · 2005 · 40 citations · Full text

, , +15

On spectrum of ILW hierarchy in conformal field theory

Journal of High Energy Physics · 2013 · 38 citations · Full text

, , +11

1–5 of 11

Authors

17

  1. MR
    Michael R. Fellows

    University of Victoria, Canada

    3 publications · 140 citations

    3

    h-index

  2. RG
    Rodney G. Downey

    Victoria University of Wellington, New Zealand

    2 publications · 74 citations

    2

    h-index

  3. KW
    Kenneth W. Regan

    University at Buffalo, State University of New York, United States

    2 publications · 74 citations

    2

    h-index

  4. MY
    Mihalis Yannakakis

    AT&T (United States), United States

    1 publications · 54 citations

    1

    h-index

  5. AM
    A. M. Semikhatov

    P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Russia

    1 publications · 23 citations

    1

    h-index

1–5 of 17

Institutions

14

  1. Landau Institute for Theoretical Physics

    Chernogolovka, Russia

    2 h-index

    2 publications

    75 citations

  2. European Organization for Nuclear Research

    Geneva, Switzerland

    1 h-index

    1 publications

    23 citations

  3. University of Bahrain

    Madīnat ‘Īsá, Bahrain

    1 h-index

    1 publications

    29 citations

  4. Rutgers, The State University of New Jersey

    New Brunswick, United States

    1 h-index

    1 publications

    38 citations

  5. Victoria University of Wellington

    Wellington, New Zealand

    1 h-index

    1 publications

    46 citations

  6. WuFeng University

    Minxiong, Taiwan

    1 h-index

    1 publications

    13 citations

  7. University of Victoria

    Victoria, Canada

    1 h-index

    1 publications

    46 citations

  8. National Chung Cheng University

    Minxiong, Taiwan

    1 h-index

    1 publications

    13 citations

1–8 of 14

Venues

  1. Modern Applied Science

    1 publications · 29 citations

    1

    h-index

  2. Journal of Mathematical Sciences

    1 publications · 18 citations

    1

    h-index

  3. Journal of Computer and System Sciences

    1 publications · 54 citations

    1

    h-index

  4. Symposium on the Theory of Computing

    Conference · 1 publications · 66 citations

    1

    h-index

  5. Journal of High Energy Physics

    JHEP · 1 publications · 38 citations

    1

    h-index

1–5